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參數(shù)資料
| 型號： | THS5651AIPWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 0.035 us SETTLING TIME, 10-BIT DAC, PDSO28 |
| 封裝： | PLASTIC, TSSOP-28 |
| 文件頁數(shù)： | 9/33頁 |
| 文件大?。?/td> | 948K |
| 代理商： | THS5651AIPWR |
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THS5651A
10BIT, 125 MSPS, CommsDAC
DIGITALTOANALOG CONVERTER
SLAS260A FEBRUARY 2000 REVISED SEPTEMBER 2002
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
DAC transfer function
The THS5651A delivers complementary output currents IOUT1 and IOUT2. Output current IOUT1 equals the
approximate full-scale output current when all input bits are set high in mode 0 (straight binary input), i.e. the
binary input word has the decimal representation 1023. For mode 1, the MSB is inverted (twos complement input
format). Full-scale output current will flow through terminal IOUT2 when all input bits are set low (mode 0,
straight binary input). The relation between IOUT1 and IOUT2 can thus be expressed as:
IOUT1
+ IOUT
FS * IOUT2
where IOUTFS is the full-scale output current. The output currents can be expressed as:
IOUT1
+ IOUT
FS
CODE
1024
IOUT2
+ IOUT
FS
(1023
* CODE)
1024
where CODE is the decimal representation of the DAC data input word. Output currents IOUT1 and IOUT2 drive
resistor loads RLOAD or a transformer with equivalent input load resistance RLOAD. This would translate into
single-ended voltages VOUT1 and VOUT2 at terminal IOUT1 and IOUT2, respectively, of:
VOUT1
+ IOUT1
R
LOAD +
CODE
1024
IOUT
FS
R
LOAD
VOUT2
+ IOUT2
R
LOAD +
(1023–CODE)
1024
IOUT
FS
R
LOAD
The differential output voltage VOUTDIFF can thus be expressed as:
VOUT
DIFF + VOUT1–VOUT2 +
(2CODE–1023)
1024
IOUT
FS
R
LOAD
The latter equation shows that applying the differential output will result in doubling of the signal power delivered
to the load. Since the output currents of IOUT1 and IOUT2 are complementary, they become additive when
processed differentially. Care should be taken not to exceed the compliance voltages at node IOUT1 and
IOUT2, which would lead to increased signal distortion.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| THS5651AIPWRG4 | 功能描述:數(shù)模轉換器- DAC 10-Bit 100MSPS Comms DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| THS5651DW | 制造商:TI 制造商全稱:Texas Instruments 功能描述:10-BIT, 100 MSPS, CommsDACE DIGITAL-TO-ANALOG CONVERTER |
| THS5651EVM | 功能描述:數(shù)據(jù)轉換 IC 開發(fā)工具 THS5651 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| THS5651IDW | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| THS5651IPW | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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